In an infant, the space where two skull-bone sutures join forms a membrane-covered "soft spot" called a fontanel (fontanelle). The fontanels allow for growth of the skull during an infant's first year. The fontanels should feel firm and very slightly curved inward to the touch. A tense or bulging fontanel occurs when fluid builds up in the skull cavity or when pressure increases in the brain (increased intracranial pressure). When the infant is crying, lying down, or vomiting, the fontanels may look like they are slightly bulging, but they should return to normal when the infant is in a calm, head-up position.
...Read more

2

It's normal:
A small anterior fontanel is an otherwise healthy baby is generally no problem at all -- and the same goes for large anterior fontanels. They do sometimes go along with other medical conditions, but those conditions are generally obvious enough that parents would generally already be aware of them. Usually a small fontanel is just normal.
...Read more

4

No scientific reason:
I can't think of a scientific reason for this, nor do I know the age of your baby. It is not unusual for babies to develop a "cradle cap" rash which can have a distinct smell. Are there scaly patches on the babies scalp? If you see nothing, then I would not give it a second thought. In fact, the best thing for the " cradle cap" rash is to ALSO do nothing! Enjoy your baby!
...Read more

6

No:
The closure of the soft spot does not define craniosynostosis.It can be undetectable in size or as large as a grapefruit and the kid turn out fine.It is the behavior of the skull bones define a problem.If they fuse, not just close in , a person will have a ridge develop at the point of fusion and abnormalities develop in the shape of the head, that is craniosynostosis.
...Read more

8

4-26 months is the:
Range of closure of the anterior fontanelle. If he has no increased intracranial pressure, congenital hypothyroidism, or skeletal anomalies, it's probably an "outlier." early-onset hyperactivity is seen with family history of adhd, prenatal exposure to drugs & alcohol, & some genetic syndromes. Does india have an early intervention program that can help you by assessing his development?
...Read more

9

See below:
It requires training to evaluate the state of fontanelle for the purposes you mention and you should leave that to your doctor. See this site for info.
http://www.nlm.nih.gov/medlineplus/ency/article/003310.htm.
...Read more